For our investigations, we use publicly available data from [1]}. This dataset consists of fMRI data collected on five healthy participants viewing images from a subset of categories available in ImageNet. Participants performed a one-back test in the scanner in which they had to press a button when the same image was repeated on two consecutive presentations. The data were collected on 1200 training images that were presented once, and 50 test images presented 35 times each.
For our experiments, we restrict ourselves to the subset of test images since the higher number of repetitions provides a more robust estimate of the multi-voxel representation of each image.
